package com.atguigu;

import com.fasterxml.jackson.databind.ObjectMapper;
import org.apache.http.HttpHost;
import org.elasticsearch.action.get.GetRequest;
import org.elasticsearch.action.get.GetResponse;
import org.elasticsearch.action.search.SearchRequest;
import org.elasticsearch.action.search.SearchResponse;
import org.elasticsearch.client.RequestOptions;
import org.elasticsearch.client.RestClient;
import org.elasticsearch.client.RestHighLevelClient;
import org.elasticsearch.common.unit.Fuzziness;
import org.elasticsearch.index.query.*;
import org.elasticsearch.search.SearchHit;
import org.elasticsearch.search.SearchHits;
import org.elasticsearch.search.aggregations.AggregationBuilder;
import org.elasticsearch.search.aggregations.AggregationBuilders;
import org.elasticsearch.search.builder.SearchSourceBuilder;
import org.elasticsearch.search.fetch.subphase.highlight.HighlightBuilder;
import org.elasticsearch.search.sort.SortOrder;

import java.io.IOException;

public class ESTest_Doc_Query {

    public static void main(String[] args) throws IOException {

        RestHighLevelClient esClient = new RestHighLevelClient(
                RestClient.builder(new HttpHost("127.0.0.1", 9200, "http"))
        );

        // 1. 查询索引中全部数据
        /*SearchRequest request = new SearchRequest();
        request.indices("user");

        request.source(new SearchSourceBuilder().query(QueryBuilders.matchAllQuery()));

        SearchResponse response = esClient.search(request, RequestOptions.DEFAULT);

        SearchHits hits = response.getHits();
        System.out.println(hits.getTotalHits());
        System.out.println(response.getTook());

        for (SearchHit hit : hits) {
            System.out.println(hit.getSourceAsString());
        }*/

        // 2. 条件查询 termQuery
        /*SearchRequest request = new SearchRequest();
        request.indices("user");

        request.source(new SearchSourceBuilder().query(QueryBuilders.termQuery("age", 30)));

        SearchResponse response = esClient.search(request, RequestOptions.DEFAULT);

        SearchHits hits = response.getHits();
        System.out.println(hits.getTotalHits());
        System.out.println(response.getTook());

        for (SearchHit hit : hits) {
            System.out.println(hit.getSourceAsString());
        }*/

        // 3. 分页查询
        /*SearchRequest request = new SearchRequest();
        request.indices("user");

        SearchSourceBuilder builder = new SearchSourceBuilder().query(QueryBuilders.matchAllQuery());
        // （当前页码-1）*每一页显示数据条数
        builder.from(2);
        builder.size(2);
        request.source(builder);

        SearchResponse response = esClient.search(request, RequestOptions.DEFAULT);

        SearchHits hits = response.getHits();
        System.out.println(hits.getTotalHits());
        System.out.println(response.getTook());

        for (SearchHit hit : hits) {
            System.out.println(hit.getSourceAsString());
        }

        esClient.close();*/

        // 4. 排序查询
        /*SearchRequest request = new SearchRequest();
        request.indices("user");

        SearchSourceBuilder builder = new SearchSourceBuilder().query(QueryBuilders.matchAllQuery());
        builder.sort("age", SortOrder.DESC);
        request.source(builder);

        SearchResponse response = esClient.search(request, RequestOptions.DEFAULT);

        SearchHits hits = response.getHits();
        System.out.println(hits.getTotalHits());
        System.out.println(response.getTook());

        for (SearchHit hit : hits) {
            System.out.println(hit.getSourceAsString());
        }*/

        // 5. 过滤字段
        /*SearchRequest request = new SearchRequest();
        request.indices("user");

        SearchSourceBuilder builder = new SearchSourceBuilder().query(QueryBuilders.matchAllQuery());
        String[] excludes = {};
        String[] includes = {"name"};
        builder.fetchSource(includes, excludes);
        request.source(builder);

        SearchResponse response = esClient.search(request, RequestOptions.DEFAULT);

        SearchHits hits = response.getHits();
        System.out.println(hits.getTotalHits());
        System.out.println(response.getTook());

        for (SearchHit hit : hits) {
            System.out.println(hit.getSourceAsString());
        }*/

        // 6. 组合条件查询
        /*SearchRequest request = new SearchRequest();
        request.indices("user");

        SearchSourceBuilder builder = new SearchSourceBuilder();
        BoolQueryBuilder boolQueryBuilder = QueryBuilders.boolQuery();

//        boolQueryBuilder.must(QueryBuilders.matchQuery("age", 30));
//        boolQueryBuilder.must(QueryBuilders.matchQuery("sex", "男"));
//        boolQueryBuilder.mustNot(QueryBuilders.matchQuery("sex", "男"));
        boolQueryBuilder.should(QueryBuilders.matchQuery("age", 30));
        boolQueryBuilder.should(QueryBuilders.matchQuery("age", 40));

        builder.query(boolQueryBuilder);

        request.source(builder);

        SearchResponse response = esClient.search(request, RequestOptions.DEFAULT);

        SearchHits hits = response.getHits();
        System.out.println(hits.getTotalHits());
        System.out.println(response.getTook());

        for (SearchHit hit : hits) {
            System.out.println(hit.getSourceAsString());
        }*/

        // 7. 范围查询
        /*SearchRequest request = new SearchRequest();
        request.indices("user");

        SearchSourceBuilder builder = new SearchSourceBuilder();
        RangeQueryBuilder rangeQueryBuilder = QueryBuilders.rangeQuery("age");

        rangeQueryBuilder.gte(30);
        rangeQueryBuilder.lte(40);

        builder.query(rangeQueryBuilder);

        request.source(builder);

        SearchResponse response = esClient.search(request, RequestOptions.DEFAULT);

        SearchHits hits = response.getHits();
        System.out.println(hits.getTotalHits());
        System.out.println(response.getTook());

        for (SearchHit hit : hits) {
            System.out.println(hit.getSourceAsString());
        }*/

        // 8. 模糊查询
        /*SearchRequest request = new SearchRequest();
        request.indices("user");

        SearchSourceBuilder builder = new SearchSourceBuilder();
        // 与wangwu相差一个字符
        builder.query(QueryBuilders.fuzzyQuery("name", "wangwu").fuzziness(Fuzziness.ONE));

        request.source(builder);

        SearchResponse response = esClient.search(request, RequestOptions.DEFAULT);

        SearchHits hits = response.getHits();
        System.out.println(hits.getTotalHits());
        System.out.println(response.getTook());

        for (SearchHit hit : hits) {
            System.out.println(hit.getSourceAsString());
        }*/

        // 9. 高亮查询
        /*SearchRequest request = new SearchRequest();
        request.indices("user");

        SearchSourceBuilder builder = new SearchSourceBuilder();
        TermsQueryBuilder termsQueryBuilder = QueryBuilders.termsQuery("name", "zhangsan");

        HighlightBuilder highlightBuilder = new HighlightBuilder();
        highlightBuilder.preTags("<font color='red>");
        highlightBuilder.postTags("</font>");
        highlightBuilder.field("name");

        builder.highlighter(highlightBuilder);
        builder.query(termsQueryBuilder);

        request.source(builder);

        SearchResponse response = esClient.search(request, RequestOptions.DEFAULT);

        SearchHits hits = response.getHits();
        System.out.println(hits.getTotalHits());
        System.out.println(response.getTook());

        for (SearchHit hit : hits) {
            System.out.println(hit.getSourceAsString());
        }*/

        // 10. 聚合查询
        /*SearchRequest request = new SearchRequest();
        request.indices("user");

        SearchSourceBuilder builder = new SearchSourceBuilder();

        AggregationBuilder aggregationBuilder = AggregationBuilders.max("maxAge").field("age");

        builder.aggregation(aggregationBuilder);

        request.source(builder);
        SearchResponse response = esClient.search(request, RequestOptions.DEFAULT);

        System.out.println(new ObjectMapper().writeValueAsString(response.getAggregations()));

        SearchHits hits = response.getHits();
        System.out.println(hits.getTotalHits());
        System.out.println(response.getTook());

        for (SearchHit hit : hits) {
            System.out.println(hit.getSourceAsString());
        }*/

        // 11. 分组查询
        SearchRequest request = new SearchRequest();
        request.indices("user");

        SearchSourceBuilder builder = new SearchSourceBuilder();

        AggregationBuilder aggregationBuilder = AggregationBuilders.terms("ageGroup").field("age");
        builder.aggregation(aggregationBuilder);

        request.source(builder);
        SearchResponse response = esClient.search(request, RequestOptions.DEFAULT);

        System.out.println(new ObjectMapper().writeValueAsString(response.getAggregations()));

        SearchHits hits = response.getHits();
        System.out.println(hits.getTotalHits());
        System.out.println(response.getTook());

        for (SearchHit hit : hits) {
            System.out.println(hit.getSourceAsString());
        }

        esClient.close();

    }

}
